Checking that there are no more than 2 live activities at any moment am: 0703464556

Change-Id: Ia2d09a1359a5af2b9688c130ffc1874f807d0bc9
diff --git a/tests/src/com/android/launcher3/ui/ActivityLeakTracker.java b/tests/src/com/android/launcher3/ui/ActivityLeakTracker.java
index 0b5ce02..e9258e9 100644
--- a/tests/src/com/android/launcher3/ui/ActivityLeakTracker.java
+++ b/tests/src/com/android/launcher3/ui/ActivityLeakTracker.java
@@ -77,6 +77,8 @@
             }
         }
 
+        if (liveActivities > 2)  return false;
+
         // It's OK to have 1 leaked activity if no active activities exist.
         return liveActivities == 0 ? destroyedActivities <= 1 : destroyedActivities == 0;
     }